﻿// VsPkg.cs : Implementation of DLanguagePackage
//

using System;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
using System.ComponentModel.Design;
using Microsoft.Win32;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.VisualStudio.OLE.Interop;
using Microsoft.VisualStudio.Shell;

using Microsoft.VisualStudio.Package;
using Microsoft.VisualStudio.TextManager.Interop;


namespace DLanguagePackage
{
    /// <summary>
    /// This is the class that implements the package exposed by this assembly.
    ///
    /// The minimum requirement for a class to be considered a valid package for Visual Studio
    /// is to implement the IVsPackage interface and register itself with the shell.
    /// This package uses the helper classes defined inside the Managed Package Framework (MPF)
    /// to do it: it derives from the Package class that provides the implementation of the 
    /// IVsPackage interface and uses the registration attributes defined in the framework to 
    /// register itself and its components with the shell.
    /// </summary>
    // This attribute tells the registration utility (regpkg.exe) that this class needs
    // to be registered as package.
    [PackageRegistration(UseManagedResourcesOnly = true)]
    // A Visual Studio component can be registered under different regitry roots; for instance
    // when you debug your package you want to register it in the experimental hive. This
    // attribute specifies the registry root to use if no one is provided to regpkg.exe with
    // the /root switch.
    [DefaultRegistryRoot("Software\\Microsoft\\VisualStudio\\9.0")]
    // This attribute is used to register the informations needed to show the this package
    // in the Help/About dialog of Visual Studio.
    [InstalledProductRegistration(false, "#110", "#112", "1.0", IconResourceID = 400)]
    // In order be loaded inside Visual Studio in a machine that has not the VS SDK installed, 
    // package needs to have a valid load key (it can be requested at 
    // http://msdn.microsoft.com/vstudio/extend/). This attributes tells the shell that this 
    // package has a load key embedded in its resources.
    [ProvideLoadKey("Standard", "1.0", "D Programming Language", "dank", 1)]
    // This attribute is needed to let the shell know that this package exposes some menus.
    [ProvideMenuResource(1000, 1)]
    [Guid(GuidList.guidDLanguagePackagePkgString)]

    //help docs were not clear. putting here
    [ProvideServiceAttribute(typeof(DLanguageService), ServiceName = "D Language Service")]
    //a shitload more options found at ProvideLanguageServiceAttribute Members 
    [ProvideLanguageService(typeof(DLanguageService),
                             "D Programming Language",
                             110,             // resource ID of localized language name
                             CodeSense = false,             //not Supports IntelliSense
                             RequestStockColors = true,   //not Supplies custom colors
                             EnableCommenting = false,      //not Supports commenting out code
                             EnableAsyncCompletion = false  //not Supports background parsing
                             )]
    [ProvideLanguageExtension(typeof(DLanguageService),
                                       ".d")]
    [ProvideLanguageCodeExpansion(
             typeof(DLanguageService),
             "D Programming Language", // Name of language used as registry key.
             106,           // Resource ID of localized name of language service.
             "dprogramminglanguage",  // language key used in snippet templates.
             @"%InstallRoot%\D Programming Language\SnippetsIndex.xml",  // Path to snippets index
             SearchPaths = @"%InstallRoot%\D Programming Language\Snippets\%LCID%\Snippets\;" +
                           @"%TestDocs%\Code Snippets\D Programming Language\Test Code Snippets"
             )]
    //TODO
    //[ProvideLanguageEditorOptionPage(
    public sealed class DLanguagePackagePackage : Package,IOleComponent
    {
        /// <summary>
        /// after registering me as an OLE component, this is my ID
        /// </summary>
        uint componentID;

        /// <summary>
        /// Default constructor of the package.
        /// Inside this method you can place any initialization code that does not require 
        /// any Visual Studio service because at this point the package object is created but 
        /// not sited yet inside Visual Studio environment. The place to do all the other 
        /// initialization is the Initialize method.
        /// </summary>
        public DLanguagePackagePackage()
        {
            Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering constructor for: {0}", this.ToString()));
        }



        /////////////////////////////////////////////////////////////////////////////
        // Overriden Package Implementation
        #region Package Members

        /// <summary>
        /// Initialization of the package; this method is called right after the package is sited, so this is the place
        /// where you can put all the initilaization code that rely on services provided by VisualStudio.
        /// </summary>
        protected override void Initialize()
        {
            Trace.WriteLine (string.Format(CultureInfo.CurrentCulture, "Entering Initialize() of: {0}", this.ToString()));
            base.Initialize();

            // Add our command handlers for menu (commands must exist in the .vsct file)
            OleMenuCommandService mcs = GetService(typeof(IMenuCommandService)) as OleMenuCommandService;
            if ( null != mcs )
            {
                // Create the command for the menu item.
                CommandID menuCommandID = new CommandID(GuidList.guidDLanguagePackageCmdSet, (int)PkgCmdIDList.cmdidInsertSnippet);
                MenuCommand menuItem = new MenuCommand(MenuItemCallback, menuCommandID );
                mcs.AddCommand( menuItem );
            }

            // Proffer the service.
            IServiceContainer serviceContainer = this as IServiceContainer;
            DLanguageService langService = new DLanguageService();
            langService.SetSite(this);
            serviceContainer.AddService(typeof(DLanguageService), langService, true);

            // Register a timer to call our language service during idle periods.
            IOleComponentManager mgr = GetService(typeof(SOleComponentManager))
                                       as IOleComponentManager;
            if (componentID == 0 && mgr != null)
            {
                OLECRINFO[] crinfo = new OLECRINFO[1];
                crinfo[0].cbSize = (uint)Marshal.SizeOf(typeof(OLECRINFO));
                crinfo[0].grfcrf = (uint)_OLECRF.olecrfNeedIdleTime |
                                              (uint)_OLECRF.olecrfNeedPeriodicIdleTime;
                crinfo[0].grfcadvf = (uint)_OLECADVF.olecadvfModal |
                                              (uint)_OLECADVF.olecadvfRedrawOff |
                                              (uint)_OLECADVF.olecadvfWarningsOff;
                crinfo[0].uIdleTimeInterval = 1000;
                int hr = mgr.FRegisterComponent(this, crinfo, out componentID);
            }

        }

        protected override void Dispose(bool disposing)
        {
            if (componentID != 0)
            {
                IOleComponentManager mgr = GetService(typeof(SOleComponentManager)) as IOleComponentManager;
                if (mgr != null)
                {
                    int hr = mgr.FRevokeComponent(componentID);
                }
                componentID = 0;
            }

            base.Dispose(disposing);
        }
        #endregion

        /// <summary>
        /// This function is the callback used to execute a command when the a menu item is clicked.
        /// See the Initialize method to see how the menu item is associated to this function using
        /// the OleMenuCommandService service and the MenuCommand class.
        /// </summary>
        private void MenuItemCallback(object sender, EventArgs e)
        {
            // Show a Message Box to prove we were here
            IVsUIShell uiShell = (IVsUIShell)GetService(typeof(SVsUIShell));
            Guid clsid = Guid.Empty;
            int result;
            Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(uiShell.ShowMessageBox(
                       0,
                       ref clsid,
                       "D Programming Language",
                       string.Format(CultureInfo.CurrentCulture, "Inside {0}.MenuItemCallback()", this.ToString()),
                       string.Empty,
                       0,
                       OLEMSGBUTTON.OLEMSGBUTTON_OK,
                       OLEMSGDEFBUTTON.OLEMSGDEFBUTTON_FIRST,
                       OLEMSGICON.OLEMSGICON_INFO,
                       0,        // false
                       out result));
        }


        #region IOleComponent Members

        public int FContinueMessageLoop(uint uReason, IntPtr pvLoopData, MSG[] pMsgPeeked)
        {
            return 1;//?
        }

        public int FDoIdle(uint grfidlef)
        {
            bool bPeriodic = (grfidlef & (uint)_OLEIDLEF.oleidlefPeriodic) != 0;
            // Use typeof(TestLanguageService) because we need to
            // reference the GUID for our language service.
            LanguageService service = GetService(typeof(DLanguageService)) as LanguageService;
            if (service != null)
            {
                service.OnIdle(bPeriodic);
            }
            return 0;//not more idle time needed
        }

        public int FPreTranslateMessage(MSG[] pMsg)
        {
            return 0;
        }

        public int FQueryTerminate(int fPromptUser)
        {
            return 1;
        }

        public int FReserved1(uint dwReserved, uint message, IntPtr wParam, IntPtr lParam)
        {
            return 1;
        }

        public IntPtr HwndGetWindow(uint dwWhich, uint dwReserved)
        {
            return IntPtr.Zero;
        }

        public void OnActivationChange(IOleComponent pic, int fSameComponent, OLECRINFO[] pcrinfo, int fHostIsActivating, OLECHOSTINFO[] pchostinfo, uint dwReserved)
        {
        }

        public void OnAppActivate(int fActive, uint dwOtherThreadID)
        {
        }

        public void OnEnterState(uint uStateID, int fEnter)
        {
        }

        public void OnLoseActivation()
        {
        }

        public void Terminate()
        {
        }

        #endregion
    }
}